| 摘要 |
A high strength and high conductivity copper alloy pipe, rod, or wire is composed of an alloy composition containing 0.13 to 0.33 mass % of Co, 0.044 to 0.097 mass % of P, 0.005 to 0.80 mass % of Sn, and 0.00005 to 0.0050 mass % of O, wherein a content [Co] mass % of Co and a content [P] mass % of P satisfy a relationship of 2.9≦̸([Co]−0.007)/([P]−0.008)≦̸6.1, and the remainder includes Cu and inevitable impurities. The high strength and high conductivity copper alloy pipe, rod, or wire is produced by a process including a hot extruding process. Strength and conductivity of the high strength and high conductivity copper pipe, rod, or wire are improved by uniform precipitation of a compound of Co and P and by solid solution of Sn.
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